[clang] [Clang] Warning as error for fold expressions over comparison operators (PR #136836)

[Younan Zhang via cfe-commits]

================
@@ -15050,7 +15050,7 @@ ExprResult Sema::CreateBuiltinBinOp(SourceLocation 
OpLoc,
     ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc);
 
     if (const auto *BI = dyn_cast<BinaryOperator>(LHSExpr);
-        BI && BI->isComparisonOp())
+        !ForFoldExpression && BI && BI->isComparisonOp())
----------------
zyn0217 wrote:

The right fold cases are handled by this branch, right? So shall we rename  
ForFoldExpression to ForLeftFold or something?

https://github.com/llvm/llvm-project/pull/136836
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